Prolapsing cystitis cystica causing bladder outlet obstruction: An unusual complication.

Cystitis cystica (CC) is aproliferative disorder of bladder urothelium and usually subsides with medical therapy. However, this is not true for severe CC where surgical intervention is required to control breakthrough urinary tract infection (UTI). It may be mistaken as bladder neoplasm or posterior urethral valve, especially in children. Here, we report a case of CC in a 2-year-old boy where we had to excise the large pedunculated intravesical lesion to control breakthrough UTI and ongoing renal damage.